With SmartFrame Gallery, you can quickly create an interactive image gallery in a form of a slider which you can then embed on your website as easily as a regular SmartFrame:  

How many images can I add to an SF Gallery?

SmartFrame Gallery can have up to 50 images.

How can I set up an aspect ratio for my Gallery?

The Gallery aspect ratio is calculated automatically based on all the image which are inside the Gallery. It is currently not possible to set up a custom aspect ratio.

Can I use my existing Themes for a Gallery?

Yes. Any Themes that you have already created can be used for a Gallery. The only difference is that the Gallery Description will be used instead of the Caption defined in Theme settings which means that the same caption will be displayed for all images in the Gallery.